189628245 has 48 divisors (see below), whose sum is σ = 341827200. Its totient is φ = 97130880.

The previous prime is 189628193. The next prime is 189628247. The reversal of 189628245 is 542826981.

189628245 is a `hidden beast` number, since 18 + 9 + 628 + 2 + 4 + 5 = 666.

It is not a de Polignac number, because 189628245 - 2⁶ = 189628181 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 189628245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189628247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431736 + ... + 432174.

It is an arithmetic number, because the mean of its divisors is an integer number (7121400).

Almost surely, 2^189628245 is an apocalyptic number.

189628245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189628245 is a deficient number, since it is larger than the sum of its proper divisors (152198955).

189628245 is a wasteful number, since it uses less digits than its factorization.

189628245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 807 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 189628245 is about 13770.5571782699. The cubic root of 189628245 is about 574.5145190131.

The spelling of 189628245 in words is "one hundred eighty-nine million, six hundred twenty-eight thousand, two hundred forty-five".